SCC-FT01 connection for 2 BNC inputs

[nglassma]

I have an SCC 2345 with configurable connectors. Some BNC signal data I have coming from transducers is already conditioned. I would like to make most efficient use of my feed through units (SCC-FT01). Can I use both CH+ and CH- to feed through signals from 2 separate BNC sources? If so, where does the ground go for the second of the two: I notice that there is only one ground line on the SCC-FT01. These transducers have their own external excitation. Is there an advantage/disadvantage to using only one signal per SCC-FT01?

[LucaP.]

Hi,

Yes, you can use CH+ and CH- to measure two analog input signals. They'll have both the same ground, which is AIGND.
You can connect two single-ended (your case) or one differential signal to a FT01. The advantage to read a signal in differential mode, is that you avoid ground loops and get a better signal by rejecting common-mode signal noise. The disadvantage is, that you can measure only one signal.

I recommend you to have a look into the SCC-FT01 manual for more informations.

SCC-FT01 User Manual

Regards,
Luca